package com.atguigu.lease.web.app.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.UserInfoService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.atguigu.lease.web.app.vo.user.UserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.Map;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    RedisTemplate redisTemplate;

    @Autowired
    UserInfoService userInfoService;
    @Override
    public String login(LoginVo loginVo) {

        //1.判断手机号码和验证码
        if(!StringUtils.hasText(loginVo.getPhone())){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        //2.校验验证码
        String key = RedisConstant.APP_LOGIN_PREFIX + loginVo.getPhone();
        String code = (String) redisTemplate.opsForValue().get(key);
        if(code == null){
            throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);
        }

        if(!code.equals(loginVo.getCode())){
            throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }

        //3.判断用户是否存在，不存在则创建注册（创建用户）
        LambdaQueryWrapper<UserInfo> userInfoLambdaQueryWrapper = new LambdaQueryWrapper<>();
        userInfoLambdaQueryWrapper.eq(UserInfo::getPhone,loginVo.getPhone());
        UserInfo userInfo = userInfoService.getOne(userInfoLambdaQueryWrapper);

        if(userInfo == null){
            userInfo = new UserInfo();
            userInfo.setPhone(loginVo.getPhone());
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfo.setNickname("用户-" + loginVo.getPhone().substring(7));
            userInfoService.save(userInfo);
        }

        //4.判断用户状态
        if(userInfo.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }
        Map<String, Object> claims = Map.of(
                "userId", userInfo.getId(),
                "phone", userInfo.getPhone()
        );
        return JwtUtil.generateToken("app_info",claims);

    }

    @Override
    public void getSMSCode(String phone) {
        //1.判断手机号码
        if(!StringUtils.hasText(phone)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        //2.发送验证码
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        boolean hasKey = redisTemplate.hasKey(key);
        if(hasKey){
            Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);
            if(RedisConstant.APP_LOGIN_CODE_TTL_SEC - expire < RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC){
                throw  new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }
        }

        //3.发送短信，并将验证码存入Redis
        String code = "123456";
        redisTemplate.opsForValue().set(key,code,RedisConstant.APP_LOGIN_CODE_TTL_SEC,TimeUnit.SECONDS);
    }

    @Override
    public UserInfoVo getUserInfoById(Long userId) {
        UserInfo userInfo = userInfoService.getById(userId);
        return new UserInfoVo(userInfo.getNickname(),userInfo.getAvatarUrl());
    }


}
